Those fish traps may or may not be looking good. One of them might be attached to the Nightfury, in fact, though Toothless hasn't really noticed yet. It's not the only thing attached to his tail, after all, and his thoughts are on other matters. Like still not seeing Hiccup anywhere.

Normally, an armed Viking would be something that the dragon would take special notice of. Armed vikings are to be treated with care. But Toothless is distracted by peering through the woods that he can see, as he trots along, and so he manages not to see Katniss until he's running headlong in her direction and — wait a minute!

A call is squashed in his throat as he skids to a halt, eyes wide as he takes in the unfamiliar-looking girl. Toothless adopts a wary stance, ready to run back in the opposite direction if this thing goes sour. He's not looking for a fight, or else he might have displayed something far more hostile. Right now, he's just looking for his friend, and hoping he hasn't found a village like Berk used to be.